Cylindrical-glass-cutter holder



Oct. 27, 1925.

J. R. UHLER CYLINDRICAL GLASS CUTTER HOLDER Filed May 13. 1924 l 1 3? ::F IO OOOOOOQOOOQOOOOOOOGOOOOO 'A OOOOOOOOOOOVOOOOOOOOOOO IGH@ jects.

Patented Oct. 27, 1925.

UNITED YSTATES PATENTA OFFICE.

JACKSON R. UHLER, OF '.llATAlVIY,y PENNSYLVANIA.

cYLINnRIcAL-GLAss-CUTTER HOLDER.

Application filed May 13, 1924. Seriall No. 713,073.

/ 1o all whom t may concern:

Be it known that I, JACKSON R. Ui-innii,

'a citizen of the United States, residing at' Tatamy, in the county of Northampton and State of Pennsylvania, have invented cer? tain new and useful Improvementsv in Cylindrical-GlassCutter Holders, of which the following is a specication, reference being had to the accompanying drawings.

This invention relates to devices for hold# ing and cutting glass cylinders, such as bottles, tubes and other cylindrical glass ob- Tlie ordinary way of cutting glass cylinders is by filing a ring around the @lass and then suddenly' jarring or otherwise giving a shock to the glass and causing it to break Vwhere it has -been filed.V This method, and

indeed any other known to me, for commercial purposes is ineliicient due to the fact that the glass breaks crookedly and beside this the method requires the manual labor of filing. Thus thousands of dollars worth of cylindrical glassware are thrown away every day because they are not properly cut.

My object is to provide a means for holding a cylinder of glass while it is being cut,

' and means for cutting the glass comprising a cutting string formed to make one complete turn around the glass, the holder for the glassbeing so formed as to guide this string and prevent its cutting out of proper position, and being also so formed as to permit the ends of the string to be readily manipulated to oscillate the string and thus frictionally heat up the glass at the point where the string surrounds it. After being su'l'liciently heated by frictional engagement with the string, the glass is withdrawn and immersed iii cold water, which causes the glass to break at the place desired.

A further Objectis to provide a device of this character which embodies a frame,

the frame being contractible so as to bind upon the glass or expansible so as to permit the frame to be used on larger or smallerV cylinders, and the frame being formedwith Vperforations through which the cutting cord or heating cord passes, there being a plurality of these perforations so that the cutting member may be used with glass of various diameters.

A still further obj ect is to provide a frameof this character with grooves which engage the cord passing around the glass cylinder and accommodate this cord and at the same time prevent the cord from being shifted from one side to the other andv thus not cuttinof true. n i

ther objectswill appear in the course of the following description.

My invention is illustrated iii the accom! panying drawings, wherein Figure 1 isa front elevation of a-glass cylinder cutter constructed in accordance with my invention partly in section;

Figure 2 is a top plan view of the con struction shown iii Figure l;

, Figure 3 is al vertical section on the line 3-3 of Figure 1;

Figure 4 is a fragmentary sectional per' spective view of the member 17;

Figure 5 is a fragmentary sectional view of the member 12.

Referring to these drawings, it will be seen that the cylinder A of glass, and which may bea glass bottle, a glass tube, a flask, beaker or the like, is held in a frame, which framel holds the glass lso firmly that the cylinder cannot rotate or otherwise move. This frame is composed of the side members 10, these side members being preferably formed of channel iron and having a plurality of perforations set very close together and eX- tending longitudinally of the side members, these v perforations being designated 11.

There are two of these channel-shaped side ingv member is grooved, as at 14, the groove'Y extending nearly the entire length of the` clamping member.y This clamping member is pre-ferablyof wood. The upper clamping member 15 is also preferably of wood and j has its ends fitting within theV channel,- shaped end members and is also perforated at itsends for the passage of holding pins 16.- Tlie under face of this member 15 is formed with a l longitudinally extending channel 17 and is also formed with a plu?.

rality of cord passages 18 which pass downward through themember 15 from the top to the-bottom thereof and, open into this groove 17. Coacting with the members is a cord 19, which in cutting the glass-is wrapped one complete turn around the glass and the ends passed out through the proper holes 18.

In the use of this device, the cylinder to be cut is placed within the clamping frame and the upper and lower sections adjusted vso as to clamp the cylinder between them,

the 0lass is securely clamped, the operator.v

takeksD holdof both ends of the cord and pulls rapidly up and down. This causes friction and heats up the glass, while the upper and lower clamping members with their grooves hold the cord or string at the place or cutting desired. After the glass has been suliiciently yheated by the friction of the cord, the glass is witl'idrawn and immersed in cold water, which 'causes the glass to break at the point desired.

Without this holder it is `impossible to cut large cylindrical glass accurately and l have found in practice that with this holder it takes about sixty seconds to cut cylindrical glass of any diameter and that it is cut accurately at vany place desired. By using this method of cutting, the edge of the glass is more uniform Aand less sharp. This is a valuable item, especially when-poorgrades of glass are cut, such as common bottles. Thousands of dollars worth of cylindrical glassware are thrown away every day, such as flasks, beakers, graduates and Ybottles oit 'all kinds. These would Vbe used if they could be satisfactorily cut vfor other pur'- poses, especially such cylindrical glass as is used .'n laboratories where the glass is cracked or little pieces broken out. These cannot bel fixed and are of 'no more 'valueunless lthe broken 'part is cut from the Agood part. There is no means of doing this and hence everything is discarded.

1. Means for cutting Aglass cylinders comprising' clamping members adapted to 'clamp the cylinder between them, anda cord adapted 'to be disposed around the cylinder' and oscillated, said clamping members having means for guidingthe cord and preventing any movement of the cord out off the plane of cutting.

2. hleans for cutting cylindrical glass coi'nprising clamping members adapted to clamp a glass cylinder between them and each formed with longitudinal grooves constituting guides, anda cord adapted to be coiled around the glass and foscillated, one of said clamping members having openings 'through which the ends of the cord pass.

.apertures opening into said grooves through which the ends of a cord coiled around the .glass may pass.

et. Means for vcutting glass `cylinders comprising n lateral members, each having a series of perforations along its entire extent, upper and lower clam-'ping l'member-s having sliding 'engagement with the ylateral members and having means Apassing through said .perforations adapted to hold the clamping members 'in 'adjusted and clamping Sposit-ion, the upper and lower clamping members each having a longitudinal groove on `its inner face, one oi lsaid clamping members liaving a series of openings `extending from the exterior of the clamping lmember into said groove and lthrough which the ends of a cord coiled around 'the fglass vmay pass.

5. Means for cutting cylindrical glass comprising Va clamping frame within which the cylinder of .glass lis 'adapted to be clamped and including opposed 'members engaging the glass, the confronting faces of the opposed members being formed with longitudinal 'grooves and 'one' of said members having a series of periorati-ons opening into the grooves, and la cord Vadapted to be coiled around the glass and having its 4ends passed through said perror-ations.

6. Means for cutting cylindrical lglass comprising lateral members `channel-shaped -in cross section and formed with a series oi perorations, upiper and lower members having vtheir ends adapted to be 'disposed within the channelhaped lateral members `and having perforations adapted to align with any paifr of perforations in the lateral vmembers, vpins passing thro-ugh said perforations Vand Aholding' the 4clamping members in 'adsignature. y..

JACKSON R. UHLER.

vjusted vposition upon the 'lateral' mein-bers, 

